001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.script;
016    
017    import org.apache.tapestry.util.xml.RuleDirectedParser;
018    import org.xml.sax.Attributes;
019    
020    /**
021     * Constructs a {@link org.apache.tapestry.script.UniqueToken}
022     * from an <unique> element, which contains full content.
023     *
024     * @author Howard Lewis Ship
025     * @since 3.0
026     */
027    
028    public class UniqueRule extends AbstractTokenRule
029    {
030    
031        public void endElement(RuleDirectedParser parser)
032        {
033            parser.pop();
034        }
035    
036        public void startElement(RuleDirectedParser parser, Attributes attributes)
037        {
038            IScriptToken token = new UniqueToken(parser.getLocation());
039    
040            addToParent(parser, token);
041            parser.push(token);
042        }
043    
044    }